The book is composed of Nyaya theory and its various factors such as pramana, doubt (sarhs'ya), error (viparyyaya), hypothetical argument (tarka), etc.Definition of valid knowledge (prama), parmana (method of knowledge), Nyaya criticism of the Bauddha views of pramana, Nyaya criticism of the MTmarhsa and Sarhkhya views, subject, object and method of valid knowledge, test of truth, Buddhist, Jaina, Prabhakara, Vedanta and Nyaya definitions of I perception are also explained in detail in the book.
The book also talks about ordinary perception, extraordinary perception, nature and definition of anumana | (inference), grounds of inference, classification and logical forms of inference, fallacies of inference, etc. Upamana 11 (comparison), its Nyaya definition, Jaina, Mlmamsa, vedanta views of Upamana, its classification, and Upamana as I an independent source of knowledge are other aspects of the book with sufficient light thrown upon them. The book f also deal with sabda (testimony), its Nyaya definition and different kinds, along with sounds and words and unity of § words and the hypothesis of sphota. In essence, the book touch almost every aspect of Nyaya theory. And, the order *" and presentation of matter in the book also contribute of make the book worth reading.